Hybrid storage solutions are nothing new, but they typically combine solid-state and mechanical storage. A team of Japanese researchers has now developed a hybrid SSD design that relies on two flavors of solid-state storage: NAND and ReRAM. Unlike DRAM, memristor-based ReRAM is non-volatile, allowing it to serve as cache in a drive otherwise made up of traditional NAND.

TechOn has more details on the "SSD architecture," which has been modeled on a 256GB drive with 1GB of ReRAM cache. The ReRAM would be used several ways.